623 static int stop_wait_callback (struct lwp_info *lp, void *data);
654   struct lwp_info *lp, *lpnext;  in init_lwp_list()  local
656   for (lp = lwp_list; lp; lp = lpnext)  in init_lwp_list()
658       lpnext = lp->next;  in init_lwp_list()
659       xfree (lp);  in init_lwp_list()
674   struct lwp_info *lp;  in add_lwp()  local
678   lp = (struct lwp_info *) xmalloc (sizeof (struct lwp_info));  in add_lwp()
680   memset (lp, 0, sizeof (struct lwp_info));  in add_lwp()
682   lp->waitstatus.kind = TARGET_WAITKIND_IGNORE;  in add_lwp()
684   lp->ptid = ptid;  in add_lwp()
686   lp->next = lwp_list;  in add_lwp()
687   lwp_list = lp;  in add_lwp()
691   return lp;  in add_lwp()
699   struct lwp_info *lp, *lpprev;  in delete_lwp()  local
703   for (lp = lwp_list; lp; lpprev = lp, lp = lp->next)  in delete_lwp()
704     if (ptid_equal (lp->ptid, ptid))  in delete_lwp()
707   if (!lp)  in delete_lwp()
715     lpprev->next = lp->next;  in delete_lwp()
717     lwp_list = lp->next;  in delete_lwp()
719   xfree (lp);  in delete_lwp()
728   struct lwp_info *lp;  in find_lwp_pid()  local
736   for (lp = lwp_list; lp; lp = lp->next)  in find_lwp_pid()
737     if (lwp == GET_LWP (lp->ptid))  in find_lwp_pid()
738       return lp;  in find_lwp_pid()
751   struct lwp_info *lp, *lpnext;  in iterate_over_lwps()  local
753   for (lp = lwp_list; lp; lp = lpnext)  in iterate_over_lwps()
755       lpnext = lp->next;  in iterate_over_lwps()
756       if ((*callback) (lp, data))  in iterate_over_lwps()
757 	return lp;  in iterate_over_lwps()
770   struct lwp_info *lp, *found_lp;  in lin_lwp_attach_lwp()  local
785   found_lp = lp = find_lwp_pid (ptid);  in lin_lwp_attach_lwp()
786   if (lp == NULL)  in lin_lwp_attach_lwp()
787     lp = add_lwp (ptid);  in lin_lwp_attach_lwp()
814 	  lp->cloned = 1;  in lin_lwp_attach_lwp()
822       lp->stopped = 1;  in lin_lwp_attach_lwp()
840       lp->stopped = 1;  in lin_lwp_attach_lwp()
847   struct lwp_info *lp;  in linux_nat_attach()  local
856   lp = add_lwp (BUILD_LWP (GET_PID (inferior_ptid), GET_PID (inferior_ptid)));  in linux_nat_attach()
868       lp->cloned = 1;  in linux_nat_attach()
874   lp->stopped = 1;  in linux_nat_attach()
877   lp->status = W_STOPCODE (SIGSTOP);  in linux_nat_attach()
878   lp->resumed = 1;  in linux_nat_attach()
887 detach_callback (struct lwp_info *lp, void *data)  in detach_callback()  argument
889   gdb_assert (lp->status == 0 || WIFSTOPPED (lp->status));  in detach_callback()
891   if (debug_linux_nat && lp->status)  in detach_callback()
893 			strsignal (WSTOPSIG (lp->status)),  in detach_callback()
894 			target_pid_to_str (lp->ptid));  in detach_callback()
896   while (lp->signalled && lp->stopped)  in detach_callback()
899       if (ptrace (PTRACE_CONT, GET_LWP (lp->ptid), 0,  in detach_callback()
900 		  WSTOPSIG (lp->status)) < 0)  in detach_callback()
901 	error ("Can't continue %s: %s", target_pid_to_str (lp->ptid),  in detach_callback()
907 			    target_pid_to_str (lp->ptid),  in detach_callback()
908 			    status_to_str (lp->status));  in detach_callback()
910       lp->stopped = 0;  in detach_callback()
911       lp->signalled = 0;  in detach_callback()
912       lp->status = 0;  in detach_callback()
920       gdb_assert (lp->status == 0 || WIFSTOPPED (lp->status));  in detach_callback()
925   if (GET_LWP (lp->ptid) != GET_PID (lp->ptid))  in detach_callback()
928       if (ptrace (PTRACE_DETACH, GET_LWP (lp->ptid), 0,  in detach_callback()
929 		  WSTOPSIG (lp->status)) < 0)  in detach_callback()
930 	error ("Can't detach %s: %s", target_pid_to_str (lp->ptid),  in detach_callback()
936 			    target_pid_to_str (lp->ptid),  in detach_callback()
937 			    strsignal (WSTOPSIG (lp->status)));  in detach_callback()
939       delete_lwp (lp->ptid);  in detach_callback()
969 resume_callback (struct lwp_info *lp, void *data)  in resume_callback()  argument
971   if (lp->stopped && lp->status == 0)  in resume_callback()
975       child_resume (pid_to_ptid (GET_LWP (lp->ptid)), 0, TARGET_SIGNAL_0);  in resume_callback()
979 			    target_pid_to_str (lp->ptid));  in resume_callback()
980       lp->stopped = 0;  in resume_callback()
981       lp->step = 0;  in resume_callback()
988 resume_clear_callback (struct lwp_info *lp, void *data)  in resume_clear_callback()  argument
990   lp->resumed = 0;  in resume_clear_callback()
995 resume_set_callback (struct lwp_info *lp, void *data)  in resume_set_callback()  argument
997   lp->resumed = 1;  in resume_set_callback()
1004   struct lwp_info *lp;  in linux_nat_resume()  local
1020   lp = find_lwp_pid (ptid);  in linux_nat_resume()
1021   if (lp)  in linux_nat_resume()
1023       ptid = pid_to_ptid (GET_LWP (lp->ptid));  in linux_nat_resume()
1026       lp->step = step;  in linux_nat_resume()
1029       lp->resumed = 1;  in linux_nat_resume()
1033       if (lp->status)  in linux_nat_resume()
1043       lp->stopped = 0;  in linux_nat_resume()
1091 linux_nat_handle_extended (struct lwp_info *lp, int status)  in linux_nat_handle_extended()  argument
1093   linux_handle_extended_wait (GET_LWP (lp->ptid), status,  in linux_nat_handle_extended()
1094 			      &lp->waitstatus);  in linux_nat_handle_extended()
1097   if (lp->waitstatus.kind == TARGET_WAITKIND_SPURIOUS)  in linux_nat_handle_extended()
1100       new_lp = add_lwp (BUILD_LWP (lp->waitstatus.value.related_pid,  in linux_nat_handle_extended()
1105       lp->waitstatus.kind = TARGET_WAITKIND_IGNORE;  in linux_nat_handle_extended()
1110 			    GET_LWP (lp->ptid));  in linux_nat_handle_extended()
1111       ptrace (PTRACE_CONT, GET_LWP (lp->ptid), 0, 0);  in linux_nat_handle_extended()
1123 wait_lwp (struct lwp_info *lp)  in wait_lwp()  argument
1129   gdb_assert (!lp->stopped);  in wait_lwp()
1130   gdb_assert (lp->status == 0);  in wait_lwp()
1132   pid = waitpid (GET_LWP (lp->ptid), &status, 0);  in wait_lwp()
1135       pid = waitpid (GET_LWP (lp->ptid), &status, __WCLONE);  in wait_lwp()
1146 				target_pid_to_str (lp->ptid));  in wait_lwp()
1152       gdb_assert (pid == GET_LWP (lp->ptid));  in wait_lwp()
1158 			      target_pid_to_str (lp->ptid),  in wait_lwp()
1169 			    target_pid_to_str (lp->ptid));  in wait_lwp()
1174       if (in_thread_list (lp->ptid))  in wait_lwp()
1177 	  if (!ptid_equal (lp->ptid, inferior_ptid))  in wait_lwp()
1178 	    delete_thread (lp->ptid);  in wait_lwp()
1180 			     target_pid_to_str (lp->ptid));  in wait_lwp()
1183       delete_lwp (lp->ptid);  in wait_lwp()
1196       if (linux_nat_handle_extended (lp, status))  in wait_lwp()
1197 	return wait_lwp (lp);  in wait_lwp()
1206 stop_callback (struct lwp_info *lp, void *data)  in stop_callback()  argument
1208   if (!lp->stopped && !lp->signalled)  in stop_callback()
1216 			      target_pid_to_str (lp->ptid));  in stop_callback()
1219       ret = kill_lwp (GET_LWP (lp->ptid), SIGSTOP);  in stop_callback()
1228       lp->signalled = 1;  in stop_callback()
1229       gdb_assert (lp->status == 0);  in stop_callback()
1239 stop_wait_callback (struct lwp_info *lp, void *data)  in stop_wait_callback()  argument
1243   if (!lp->stopped)  in stop_wait_callback()
1247       status = wait_lwp (lp);  in stop_wait_callback()
1254 	  if (!lp->signalled)  in stop_wait_callback()
1256 	      lp->stopped = 1;  in stop_wait_callback()
1261 	  ptrace (PTRACE_CONT, GET_LWP (lp->ptid), 0, 0);  in stop_wait_callback()
1265 				target_pid_to_str (lp->ptid),  in stop_wait_callback()
1268 	  return stop_wait_callback (lp, flush_mask);  in stop_wait_callback()
1290 	      ptrace (PTRACE_CONT, GET_LWP (lp->ptid), 0, 0);  in stop_wait_callback()
1295 				      target_pid_to_str (lp->ptid),  in stop_wait_callback()
1300 				      target_pid_to_str (lp->ptid));  in stop_wait_callback()
1303 	      stop_wait_callback (lp, data);  in stop_wait_callback()
1305 	      if (lp->status)  in stop_wait_callback()
1311 					  target_pid_to_str (lp->ptid),  in stop_wait_callback()
1314 		  kill_lwp (GET_LWP (lp->ptid), WSTOPSIG (lp->status));  in stop_wait_callback()
1317 	      lp->status = status;  in stop_wait_callback()
1330 				      target_pid_to_str (lp->ptid));  in stop_wait_callback()
1334 	      ptrace (PTRACE_CONT, GET_LWP (lp->ptid), 0, 0);  in stop_wait_callback()
1338 				    target_pid_to_str (lp->ptid),  in stop_wait_callback()
1343 	      stop_wait_callback (lp, data);  in stop_wait_callback()
1347 	      if (lp->status == 0)  in stop_wait_callback()
1348 		lp->status = status;  in stop_wait_callback()
1355 					  target_pid_to_str (lp->ptid),  in stop_wait_callback()
1358 		  kill_lwp (GET_LWP (lp->ptid), WSTOPSIG (status));  in stop_wait_callback()
1367 	  lp->stopped = 1;  in stop_wait_callback()
1368 	  lp->signalled = 0;  in stop_wait_callback()
1408 flush_callback (struct lwp_info *lp, void *data)  in flush_callback()  argument
1417   if (lwp_list == lp && lp->next == NULL)  in flush_callback()
1418     if (!linux_nat_thread_alive (lp->ptid))  in flush_callback()
1428   if (lp->status)  in flush_callback()
1431 	printf_unfiltered ("FC: LP has pending status %06x\n", lp->status);  in flush_callback()
1432       if (WIFSTOPPED (lp->status) && sigismember (flush_mask, WSTOPSIG (lp->status)))  in flush_callback()
1433 	lp->status = 0;  in flush_callback()
1436   while (linux_nat_has_pending (GET_LWP (lp->ptid), &pending, flush_mask))  in flush_callback()
1441       ret = ptrace (PTRACE_CONT, GET_LWP (lp->ptid), 0, 0);  in flush_callback()
1446       lp->stopped = 0;  in flush_callback()
1447       stop_wait_callback (lp, flush_mask);  in flush_callback()
1451 			    lp->status);  in flush_callback()
1460 status_callback (struct lwp_info *lp, void *data)  in status_callback()  argument
1464   return (lp->status != 0 && lp->resumed);  in status_callback()
1470 running_callback (struct lwp_info *lp, void *data)  in running_callback()  argument
1472   return (lp->stopped == 0 || (lp->status != 0 && lp->resumed));  in running_callback()
1478 count_events_callback (struct lwp_info *lp, void *data)  in count_events_callback()  argument
1485   if (lp->status != 0  in count_events_callback()
1486       && WIFSTOPPED (lp->status) && WSTOPSIG (lp->status) == SIGTRAP)  in count_events_callback()
1495 select_singlestep_lwp_callback (struct lwp_info *lp, void *data)  in select_singlestep_lwp_callback()  argument
1497   if (lp->step && lp->status != 0)  in select_singlestep_lwp_callback()
1506 select_event_lwp_callback (struct lwp_info *lp, void *data)  in select_event_lwp_callback()  argument
1513   if (lp->status != 0  in select_event_lwp_callback()
1514       && WIFSTOPPED (lp->status) && WSTOPSIG (lp->status) == SIGTRAP)  in select_event_lwp_callback()
1522 cancel_breakpoints_callback (struct lwp_info *lp, void *data)  in cancel_breakpoints_callback()  argument
1527   if (lp == event_lp)  in cancel_breakpoints_callback()
1541   if (lp->status != 0  in cancel_breakpoints_callback()
1542       && WIFSTOPPED (lp->status) && WSTOPSIG (lp->status) == SIGTRAP  in cancel_breakpoints_callback()
1543       && breakpoint_inserted_here_p (read_pc_pid (lp->ptid) -  in cancel_breakpoints_callback()
1549 			    target_pid_to_str (lp->ptid));  in cancel_breakpoints_callback()
1553 	write_pc_pid (read_pc_pid (lp->ptid) - DECR_PC_AFTER_BREAK, lp->ptid);  in cancel_breakpoints_callback()
1556       lp->status = 0;  in cancel_breakpoints_callback()
1618 resumed_callback (struct lwp_info *lp, void *data)  in resumed_callback()  argument
1620   return lp->resumed;  in resumed_callback()
1734 stop_and_resume_callback (struct lwp_info *lp, void *data)  in stop_and_resume_callback()  argument
1738   if (!lp->stopped && !lp->signalled)  in stop_and_resume_callback()
1740       stop_callback (lp, NULL);  in stop_and_resume_callback()
1741       stop_wait_callback (lp, NULL);  in stop_and_resume_callback()
1744 	if (lp == ptr)  in stop_and_resume_callback()
1746 	    resume_callback (lp, NULL);  in stop_and_resume_callback()
1747 	    resume_set_callback (lp, NULL);  in stop_and_resume_callback()
1756   struct lwp_info *lp = NULL;  in linux_nat_wait()  local
1781       lp = iterate_over_lwps (status_callback, NULL);  in linux_nat_wait()
1782       if (lp)  in linux_nat_wait()
1784 	  status = lp->status;  in linux_nat_wait()
1785 	  lp->status = 0;  in linux_nat_wait()
1791 				target_pid_to_str (lp->ptid));  in linux_nat_wait()
1807       lp = find_lwp_pid (ptid);  in linux_nat_wait()
1808       gdb_assert (lp);  in linux_nat_wait()
1809       status = lp->status;  in linux_nat_wait()
1810       lp->status = 0;  in linux_nat_wait()
1816 			    target_pid_to_str (lp->ptid));  in linux_nat_wait()
1821       options = lp->cloned ? __WCLONE : 0;  in linux_nat_wait()
1825   if (status && lp->signalled)  in linux_nat_wait()
1839       child_resume (pid_to_ptid (GET_LWP (lp->ptid)), lp->step,  in linux_nat_wait()
1844 			    lp->step ? "PTRACE_SINGLESTEP" : "PTRACE_CONT",  in linux_nat_wait()
1845 			    target_pid_to_str (lp->ptid));  in linux_nat_wait()
1846       lp->stopped = 0;  in linux_nat_wait()
1847       gdb_assert (lp->resumed);  in linux_nat_wait()
1850       stop_wait_callback (lp, NULL);  in linux_nat_wait()
1873 	  lp = find_lwp_pid (pid_to_ptid (lwpid));  in linux_nat_wait()
1884 	  if (WIFSTOPPED (status) && !lp)  in linux_nat_wait()
1895 	  if (!WIFSTOPPED (status) && !lp)  in linux_nat_wait()
1908 	  if (!lp)  in linux_nat_wait()
1910 	      lp = add_lwp (BUILD_LWP (lwpid, GET_PID (inferior_ptid)));  in linux_nat_wait()
1912 		lp->cloned = 1;  in linux_nat_wait()
1918 		  lp->signalled = 1;  in linux_nat_wait()
1927 		  add_thread (lp->ptid);  in linux_nat_wait()
1929 				     target_pid_to_str (lp->ptid));  in linux_nat_wait()
1940 	      if (linux_nat_handle_extended (lp, status))  in linux_nat_wait()
1950 	      if (in_thread_list (lp->ptid))  in linux_nat_wait()
1954 		  if (!ptid_equal (lp->ptid, inferior_ptid))  in linux_nat_wait()
1955 		    delete_thread (lp->ptid);  in linux_nat_wait()
1957 				     target_pid_to_str (lp->ptid));  in linux_nat_wait()
1970 	      if (GET_PID (lp->ptid) == GET_LWP (lp->ptid))  in linux_nat_wait()
1972 		  lp->stopped = 1;  in linux_nat_wait()
1979 				    target_pid_to_str (lp->ptid));  in linux_nat_wait()
1981 	      delete_lwp (lp->ptid);  in linux_nat_wait()
2001 	  if (num_lwps > 1 && !linux_nat_thread_alive (lp->ptid))  in linux_nat_wait()
2003 	      if (in_thread_list (lp->ptid))  in linux_nat_wait()
2007 		  if (!ptid_equal (lp->ptid, inferior_ptid))  in linux_nat_wait()
2008 		    delete_thread (lp->ptid);  in linux_nat_wait()
2010 				     target_pid_to_str (lp->ptid));  in linux_nat_wait()
2015 				    target_pid_to_str (lp->ptid));  in linux_nat_wait()
2017 	      delete_lwp (lp->ptid);  in linux_nat_wait()
2029 	  if (lp->signalled  in linux_nat_wait()
2035 				    target_pid_to_str (lp->ptid));  in linux_nat_wait()
2038 	      lp->signalled = 0;  in linux_nat_wait()
2041 	      child_resume (pid_to_ptid (GET_LWP (lp->ptid)), lp->step,  in linux_nat_wait()
2046 				    lp->step ?  in linux_nat_wait()
2048 				    target_pid_to_str (lp->ptid));  in linux_nat_wait()
2050 	      lp->stopped = 0;  in linux_nat_wait()
2051 	      gdb_assert (lp->resumed);  in linux_nat_wait()
2078   gdb_assert (lp);  in linux_nat_wait()
2101 	  child_resume (pid_to_ptid (GET_LWP (lp->ptid)), lp->step, signo);  in linux_nat_wait()
2105 				lp->step ?  in linux_nat_wait()
2107 				target_pid_to_str (lp->ptid),  in linux_nat_wait()
2109 	  lp->stopped = 0;  in linux_nat_wait()
2125   lp->stopped = 1;  in linux_nat_wait()
2129 			status_to_str (status), target_pid_to_str (lp->ptid));  in linux_nat_wait()
2143     select_event_lwp (&lp, &status);  in linux_nat_wait()
2148   iterate_over_lwps (cancel_breakpoints_callback, lp);  in linux_nat_wait()
2155       trap_ptid = (threaded ? lp->ptid : pid_to_ptid (GET_LWP (lp->ptid)));  in linux_nat_wait()
2164   if (lp->waitstatus.kind != TARGET_WAITKIND_IGNORE)  in linux_nat_wait()
2166       *ourstatus = lp->waitstatus;  in linux_nat_wait()
2167       lp->waitstatus.kind = TARGET_WAITKIND_IGNORE;  in linux_nat_wait()
2172   return (threaded ? lp->ptid : pid_to_ptid (GET_LWP (lp->ptid)));  in linux_nat_wait()
2176 kill_callback (struct lwp_info *lp, void *data)  in kill_callback()  argument
2179   ptrace (PTRACE_KILL, GET_LWP (lp->ptid), 0, 0);  in kill_callback()
2183 			target_pid_to_str (lp->ptid),  in kill_callback()
2190 kill_wait_callback (struct lwp_info *lp, void *data)  in kill_wait_callback()  argument
2201   if (lp->cloned)  in kill_wait_callback()
2205 	  pid = waitpid (GET_LWP (lp->ptid), NULL, __WCLONE);  in kill_wait_callback()
2210 				  target_pid_to_str (lp->ptid));  in kill_wait_callback()
2213       while (pid == GET_LWP (lp->ptid));  in kill_wait_callback()
2220       pid = waitpid (GET_LWP (lp->ptid), NULL, 0);  in kill_wait_callback()
2225 			      target_pid_to_str (lp->ptid));  in kill_wait_callback()
2228   while (pid == GET_LWP (lp->ptid));  in kill_wait_callback()